| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve cooling performance within a control box 16 by a simple configuration.SOLUTION: A reinforcement member having a guide surface for guiding air 43 toward a side opening is provided in a ceiling part 22 of a lid part 21 of a unit cover 7 so that the air 43 cooling a control board for performing attraction/release control of a lifting magnet housed within the control box 16 can be smoothly discharged to the outside of the control box 16 from the side opening 30a configured on a side surface of the unit cover 7 for covering the control box.</p> |
